As Edwin mentioned, the majority of Lange watches are manual. I believe we can add to his list of exceptions, besides the perpetual version of the Langematik, various other Langematiks - "Big Date", "No Date","Grand", and the limited editions - the Anniversary Langematik and Grosse Langematik Gangreserve.

... than the original ones. You can get a 40mm 1815 now. There were some other changes as well, but they retain much of their original DNA. So if you liked your old 1815 but for its small size, you might want to check out the current 1815s.